RYDBERG: Rocky MOUNTAIN ELORA 49 
low, transversely reticulate, sparingly strigose ; upper suture prom- 
inent. 
This species is related to X. amphioxys (A, Gray) Rydb., but 
differs in the long subulate instead of triangular calyx-teeth, in the 
banner much exceeding the wings, and in the narrower leaflets. 
Urau: St. George, 1880, JZ, £. Jones 1633 (type in herb. 
Columbia Univ.) ; 1877, Dr. E. Palmer rot. 
Homalobus uniflorus 
Pulvinate-cespitose perennial with a much-branched caudex; 
stipules ovate, scarious, ciliate ; leaves reduced to oblanceolate or 
linear-spatulate phyllodia, appressed silky-canescent, I-2 cm. 
long, 1-3 mm. wide; peduncles 1-2 cm. long, usually 1-flow- 
ered; calyx silky-canescent; tube campanulate, 2 mm. long; 
teeth subulate, of about the same length; corolla dark bluish- 
purple, 8 mm. long. 
This species is closely related to H. stmplicifolius and H. 
brachycarpus Nutt. From the former it differs in the dark bluish- 
purple, not ochroleucous corolla; the elongated peduncles, the 
longer and broader leaves, and the comparatively longer calyx- 
lobes ; from A. drachycarpus it is distinguished by its solitary flow- 
ers and darker corolla. 
Wyomine: Evanston, 1897, Aven Nelson 29717 (type in herb. 
N. Y. Bot. Gard.). 
Homatosus campestris Nutt.; T. & G. Fl. N. Am. 2: 351. 1838. 
Astragalus campestris A. Gray, Proc. Am, Acad. 6: 229, in part. 
1866. Not Astragalus campestris L. 1753. 
Astragalus convallarius Greene, Erythea 1: 207. 1893. 
There has been a confusion concerning the identity of this 
species, evidently because Dr. Gray, when he transferred the 
species to Astragalus, had in mind something entirely different 
from Nuttall’s Homalobus campestris. All the specimens of this 
Species (except the type and one more) in the herbaria of the New 
York Botanical Garden and Columbia University have been referred 
to A. junceus. H. campestris is also closely related to that species, 
_ differing in the black-hairy calyx, the longer calyx-lobes, and the 
pod, which tapers gradually to the base. The black-hairy calyx 
and the shape of the pod it has in common with Homalobus junci- 
Sormis (A. Nelson) Rydb., but it has longer calyx-teeth and nar- 
Tower and longer leaflets. In both H. junceus and H. junciformis 
Mo.Bot.Gara en 
isos 
